Automobile tire-pump.



. W. LINSTRUM.

AUTOMOBILE TIRE PUMP.

APPLICATION FILED MAR.12,1910.

1,01 1,353, Patented Dec.12,1911.

2 SHEETS-SHEET 1,

| Muri-.ling l 1E Evinottwuu,

0, W. LINSTRUM.

AUTOMOBILE TIRE PUMP.

APPLIUATIQN fum MAIL m. mm

1,01 1,353. Patented Dee.12,1911.

2 sums-SHEET a Lave/wilful!! UNITED STATES PATENT OFFICE.

OTTO W. LINSTRUM, F HOOPESTON, ILLINOIS.

i Specication of Letters Patent.

Patented Dec. 12, 1911.

Appuation inea March, 12, 1910. serial No. 548,999.

mobile engine. A further object'of my in? vention is to provide means whereby the pump may be connected or disconnected from the engine at the will of the'operator. y

A further objcctotmy invention is 'the production of Va. power tire pump which shall possess a minimum` nnmber of parts, be inexpensive of manufacture, and be efficient in operation.Y Other objects willA appear hereinafter-.1

With these objects in consists in the novel; constructionand arrangement of'lparts, which `ivillbe hereinafter fully described and,particularly pointed out in the appendedA claims. o'

My inventionfwill be more 'readily understood by reference to the accompanying drawings forming apart of this specifica tion, and in which, i .i-

Figure 1 is a top plan view of an automobile frame and a pump' attached thereto constructed according to my invention, Fig. 2 is a central longitudinal sectionshowing the pump' and' the main operative parts thereof, Figs. 3 and 4 are detail end and side elevations respectively,.Fig. 5 is a vertical section taken on line :v -:v of Fig. 1, Fig. G is a 'vertical section taken on line jf/-y o'f Fig. 1, and Figs.-7 and 8 are detail views showing a part used in a swivel 'joint connection employed in the device.

Referring now to the drawings 1- designates a portion of a standard pressed steel automobile frame to whichl the pump is attached. The horizontal cylinders 2 and 3 of the pump are superimposed as shown in Fig. 2 and are cast integral, the lug 4 ero tending'laterally from the rear end of the casting being' bolted to the frame.l Extending forwardly from the cylinders arcguide members 6 terminating in a lug 5 whiph is bolted to-the frame the same as the lug 4.

I Extending inwardly from the members 6 are arms 7 which terminate in a crank shaft,v

View my invention y hanger as Shown in detail Fig. 5. the arm 8 extending; forwardly from said hanger terminating in a swivel joint 9 by lneans'of which the'sh'aft l() is connected. The latter shaft extends inwardly and at its inner extremity a driven bevel gear l1 is provided which meshes with tho driving bevel lgear 12. The bevel gear 12 is mounted on the engine shaft lwwhich extends forwardly to the engine (not shown). The swivel joint 9 comprises a member 14 having an cyc and' stem 15, the forn'lcr-bcing,r pivoted to the arin 8 and the latter forming a journal on which the shaft revolves. The end of the shaft 10 opposite the swivel joint connection is journaled in thc eye 16 which is provided at the upper end of the-gear shift lever 17, the latter being pivoted to an arm of the frame 1 as shown 'in detail in Fig. 6. Theportion of the gear shift lever below the pivot 18 serves as a handle, access theretobeing fromalnderthe automobile.- TWhen `the b evel gears 1l and 12 are in meshthe position of the shift lever 4is as shownin Figs. 1 and 6, and when said gears are thrown out'o mesh the shift lever assumes the dotted line, position, as shown in Fig. 1.A

l'nlorder tohol'd the4 gear shift lever in either the operative 'or' inol'ierntive position tv be handle. thereof:I is made flexible so as to be adapted to spring: into the recesses 19 formed in. one edge of the slot 20 which is formed in the'frame 1 as shown in Figs. 1 and 6. The drivingr spur gear 21 mounted on the outer end of the shaft. 10 is in constant mesh with the relatively larger driven spur gear 22 which is mounted on thecrauk shaft 23. The latter shaft is journaled in the bearing of the crank shaft, hanger, a crank pin 24 being provided on said crank shaft. Mounted on -the crank pin 24 is a friction roller 25 which operates in the scotch yoke 26, the object being to convert rotary into reciprocatory motion. The upper and lower portions 27 of the scotchyolcell are grooved and adapted to slide on the guide members 6, as clearly shown in Fig. 2.

The connectingr rod 28 is secured to the scotch yoke 2G n t the point 28', and thc piston rod. 29 is connected with said connecting rod by means of split transverse members 47 held together by bolts 48', reduced portions 30 and 31 being provided in the rods 28 and 29 respectively. The'piston 'rod 32 is connected tothe scotch yoke ab' thet point 32,and the pistonrods 29.1md 32 chamber.

terminate in`pistons 33 and 34 respectively. Removable heads 35 andiG having air inlet pcrforatioiis 3|' are provided in the cylinders 2 and 3 respectively, the direction of' the incoming air'beiug indicated by arrows'. A port 38 provided in the cylinder 2coniiuunientes willi the air conduit. 39 which lends to the valve chamber 40, and a similar port 41 is provided in the cylinder 3 whielreour munieates with the air conduitV 42 leading also to' the valve chamber 40. The auto: matie'spring pressed check valves 43 having stems 44 and provided in the valve `cliainher are of ordinary design and serve the usual purpose of preventing: the. return tlnw of air after it luis been forced into the valvev The discharge nozzle 45 in the valve c hamber is provided, as shown; and connected thereto isa hose pipe''l(5. A

The o eratioiLof the pump is as follows: lVlicu tie shift `iever 1LT and the gear 11' are -in-tlie fuil line or operative positions the pump will be driven by the engine. The pistons will reciprocate s viiclironousljr` but, since -tlie port in one c vlinder is'oppo site to that; in the other. nearly a constant pressure will be. maintained in the. 'ulve chamber and hose pipe.

'While l liavevshowii what I deem to he the preferable form of my improveill 'automobile tire pump, I cio-not wish to be unitedv thereto, as there might he various changes made in the details of construction and ai'- rangementl of parts described without depart-ing from the spirit of my invention.' and hence I. desire to 'avail myself of sueh changes and alterations as fairly fall within -the scope of the appended claims.

`elaiui as. new

Having described my invention whatI and desire to secure by. Letters 40 Pateiitwis: ff' l. The combination with un aut'omob'ilgo'f a pair of superimposed oppositelyrdisposed pump cylinders foriiiedvin one casting having 'un integral v'centrally arranged lguideti projecting from one end thereofzle pistonV iii said cylinders; ii Vscotch yokeV mounted to reciprocate in said guide; operative con-V nections between said yoke and said'pistous: and an operative conneetion'betvcen 50 said votre and the enginevsluift of siiid auto-l mobile. substnntially as described. f 2. rIlle combination with an automobile ofA a pair of .superimposeil oppositely-disposedk pump cyliudcis formed-iii o ne casting'liav54 ing 'air integral centrally arranged guide projecting' from one eudtliereof. there being a securing lug provided zit tlie 4end o f said guide audat the 'opposite end of said casting, saidiast-ing boing"r secured totlie' 50 frame oftlic automobile byliolts passil'io through said logis: pistons in said cylinders; a scotch yoke mounted to reeiproetein' said `guide; operative nconnections lJfet-vi'eei'i'I said yoke and said pistouan'iliui operative connection'between said votre and the'. engine sluift of Asaidautomobile, Substantially as described'. i I'n testii'uony whereof Pham-signed my name to this speeiicatioii in the :presence o'f 70 two subscribipg witnesses.

OTTO XV. LINSTRUM;V YVitn'esses: O. LnSoN, RominrR. Remus'. 

